package controller;

import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONObject;
import model.User;
import service.ShoppingcartService;
import service.impl.ShoppingcartServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.BufferedReader;
import java.io.IOException;

@WebServlet("/shoppingcartClear")
public class ShoppingcartClearServlet extends HttpServlet {
    ShoppingcartService shoppingcartService=new ShoppingcartServiceImpl();
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //设置字符格式
        req.setCharacterEncoding("utf-8");
        resp.setCharacterEncoding("utf-8");

        //以字符流的形式接收数据
        BufferedReader reader = new BufferedReader(req.getReader());
        StringBuilder json = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            json.append(line);
        }
        //将接收的数据转换为json对象方便后面获取
        JSONObject jsonObject = JSON.parseObject(json.toString());

        //创建一个用来传数据的JSON对象
        JSONObject message = new JSONObject();

        long userId=jsonObject.getLong("uid");

        if(shoppingcartService.clear(userId)){
            message.put("statue", "1");
            message.put("Msg", "清除成功");
            resp.getWriter().write(message.toString());
        }
    }
}
